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<pre><span class="comment"> /****************************************************************************
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 #include &quot;informationwindow.h&quot;

 InformationWindow::InformationWindow(int id, QSqlRelationalTableModel *offices,
                                      QWidget *parent)
     : QDialog(parent)
 {
     QLabel *locationLabel = new QLabel(tr(&quot;Location: &quot;));
     QLabel *countryLabel = new QLabel(tr(&quot;Country: &quot;));
     QLabel *descriptionLabel = new QLabel(tr(&quot;Description: &quot;));
     QLabel *imageFileLabel = new QLabel(tr(&quot;Image file: &quot;));

     createButtons();

     locationText = new QLabel;
     countryText = new QLabel;
     descriptionEditor = new QTextEdit;

     imageFileEditor = new QComboBox;
     imageFileEditor-&gt;setModel(offices-&gt;relationModel(1));
     imageFileEditor-&gt;setModelColumn(offices-&gt;relationModel(1)-&gt;fieldIndex(&quot;file&quot;));

     mapper = new QDataWidgetMapper(this);
     mapper-&gt;setModel(offices);
     mapper-&gt;setSubmitPolicy(QDataWidgetMapper::ManualSubmit);
     mapper-&gt;setItemDelegate(new QSqlRelationalDelegate(mapper));
     mapper-&gt;addMapping(imageFileEditor, 1);
     mapper-&gt;addMapping(locationText, 2);
     mapper-&gt;addMapping(countryText, 3);
     mapper-&gt;addMapping(descriptionEditor, 4);
     mapper-&gt;setCurrentIndex(id);

     connect(descriptionEditor, SIGNAL(textChanged()),
             this, SLOT(enableButtons()));
     connect(imageFileEditor, SIGNAL(currentIndexChanged(int)),
             this, SLOT(enableButtons()));

     QGridLayout *layout = new QGridLayout;
     layout-&gt;addWidget(locationLabel, 0, 0, Qt::AlignLeft | Qt::AlignTop);
     layout-&gt;addWidget(countryLabel, 1, 0, Qt::AlignLeft | Qt::AlignTop);
     layout-&gt;addWidget(imageFileLabel, 2, 0, Qt::AlignLeft | Qt::AlignTop);
     layout-&gt;addWidget(descriptionLabel, 3, 0, Qt::AlignLeft | Qt::AlignTop);
     layout-&gt;addWidget(locationText, 0, 1);
     layout-&gt;addWidget(countryText, 1, 1);
     layout-&gt;addWidget(imageFileEditor, 2, 1);
     layout-&gt;addWidget(descriptionEditor, 3, 1);
     layout-&gt;addWidget(buttonBox, 4, 0, 1, 2);
     setLayout(layout);

     locationId = id;
     displayedImage = imageFileEditor-&gt;currentText();

     setWindowFlags(Qt::Window);
     enableButtons(false);
     setWindowTitle(tr(&quot;Trolltech Office: %1&quot;).arg(locationText-&gt;text()));
     resize(320, sizeHint().height());
 }

 int InformationWindow::id()
 {
     return locationId;
 }

 void InformationWindow::revert()
 {
     mapper-&gt;revert();
     enableButtons(false);
 }

 void InformationWindow::submit()
 {
     QString newImage(imageFileEditor-&gt;currentText());

     if (displayedImage != newImage) {
         displayedImage = newImage;
         emit imageChanged(locationId, newImage);
     }

     mapper-&gt;submit();
     mapper-&gt;setCurrentIndex(locationId);

     enableButtons(false);
 }

 void InformationWindow::createButtons()
 {
     closeButton = new QPushButton(tr(&quot;&amp;Close&quot;));
     revertButton = new QPushButton(tr(&quot;&amp;Revert&quot;));
     submitButton = new QPushButton(tr(&quot;&amp;Submit&quot;));

     closeButton-&gt;setDefault(true);

     connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));
     connect(revertButton, SIGNAL(clicked()), this, SLOT(revert()));
     connect(submitButton, SIGNAL(clicked()), this, SLOT(submit()));

     buttonBox = new QDialogButtonBox;
     buttonBox-&gt;addButton(submitButton, QDialogButtonBox::ResetRole);
     buttonBox-&gt;addButton(revertButton, QDialogButtonBox::ResetRole);
     buttonBox-&gt;addButton(closeButton, QDialogButtonBox::RejectRole);
 }

 void InformationWindow::enableButtons(bool enable)
 {
     revertButton-&gt;setEnabled(enable);
     submitButton-&gt;setEnabled(enable);
 }</pre>
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